Question

Choose the correct answer from the options given below:

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

[Given that H = 1, O = 16]

Options

• 1: 2

• 1: 0.01

• 1: 1

• 0.01: 1

Answer 1

1: 1

1 mole of hydrogen ≡ 1 g of hydrogen

1 mole of hydrogen ≡ 6.023 × 10²³ molecules

1 g of hydrogen ≡ 6.023 × 10²³ molecules

2 g of hydrogen ≡ 1.204 × 10²⁴ molecules

1 mole of oxygen ≡ 16 g of oxygen

1 mole of oxygen ≡ 6.023 × 10²³ molecules

16 g of oxygen ≡ 6.023 × 10²³ molecules

32 g of oxygen ≡1.204 × 10²⁴ molecules